首页|双环戊二烯单体预聚增粘及其碳纤维增强复合材料性能评价

双环戊二烯单体预聚增粘及其碳纤维增强复合材料性能评价

Viscosifying dicyclopentadiene monomer by prepolymerization and evaluation of its continuous carbon fiber composites

扫码查看
原文链接
  • NETL
  • NSTL
  • 维普
  • 万方数据
聚双环戊二烯(PDCPD)作为一种综合性能优异的热固性树脂,可与连续碳纤维进行复合,应用在工程领域上,以满足轻量化和节能环保需求.本文首先通过调节双环戊二烯单体(DCPD)与Grubbs 2代催化剂的质量比使其只聚合不交联,调节黏度以满足真空辅助灌注成型(VARI)工艺对树脂特性的要求.随后对碳纤维表面进行丙酮去浆处理,再与上述加入足量催化剂的预聚物进行复合.对比PDCPD复合材料与通用型环氧树脂复合材料的拉伸、弯曲、Ⅴ型缺口剪切、层间Ⅰ型以及Ⅱ型断裂韧性、冲击和热力学性能,研究PDCPD复合材料在不同加载模式下的失效机制,探寻其在工程领域应用的关键点和方向.结果表明,去浆后碳纤维与PDCPD界面结合良好,PDCPD复合材料在强度上与环氧树脂相当,在抵抗变形能力上较弱,但是在遭受高于极限强度的载荷后,仍然具有一定程度的承载能力;从层间断裂韧性来看,PDCPD复合材料Ⅰ型断裂韧性和Ⅱ型断裂韧性分别相当于环氧树脂复合材料的 406%和 250%,具有优异的抵抗分层能力;对比两种复合材料抗冲击性能,3.2 mm的PDCPD复合材料层合板在 40 J能量的冲击下,表面产生层合板勉强可见冲击损伤(BVID),背面无明显纤维破裂现象,剩余冲击压缩强度比环氧树脂复合材料高34.7%.
Polydicyclopentadiene(PDCPD)as a thermosetting resin with excellent comprehensive performance,can be composited with continuous carbon fibers(CF),for the application of various engineering field to meet the requirements of lightweight,energy conservation and environmental protection.In this paper,firstly,the viscosity of the DCPD prepolymer could meet the demands of vacuum assisted resin infusion(VARI)molding process by ad-justing the content of Grubbs 2 catalyst.Subsequently,the carbon fiber was subjected desizing treatment,and then compounded with the prepolymer added with sufficient catalyst.The tensile,flexural,V-notch shear,interlaminar fracture toughness,impact,and thermodynamic properties of PDCPD/CF composites were compared with the general epoxy resin(EP)/CF composites,The failure mechanisms of PDCPD/CF composites under different loading modes were detected,and the key points and directions for their application in the engineering field were explored.The results show that the interface between the carbon fibers after desizing and PDCPD is well bonded,and the strength of PDCPD/CF composite is comparable to that of EP/CF composite.Although PDCPD/CF composite had weaker deformation resistance,they still had a certain degree of bearing capacity after being subjected to the ulti-mate loads.From the perspective of interlaminar fracture toughness,PDCPD/CF composites have excellent delamination resistance,with mode Ⅰ and mode Ⅱ fracture toughness equivalent to 406%and 250%of CF/EP com-posites,respectively.A barely visible impact damage(BVID)has formed on the top surface of a 3.2 mm-thickness PDCPD laminate after being subjected to a 40 J impact,while there is no significant fiber breakage on the bottom surface.The residual compression strength of PDCPD/CF composites is 34.7%higher than the EP/CF composite.

polydicyclopentadienemechanical testingliquid composite mouldingpolymer matrix compositesinterlaminar fracture toughnes

程超、张晨宇、裴志磊、陈正国、周飞、周金利、张辉、孙泽玉、余木火

展开 >

东华大学 材料科学与工程学院,纤维材料改性国家重点实验室,上海 201620

上海碳纤维复合材料创新研究院有限公司,上海 201512

上海工程技术大学 材料工程学院,上海 201620

中国石化上海石油化工股份有限公司化工部,上海 200540

中原工学院 纺织学院,郑州 450007

展开 >

聚双环戊二烯 力学性能 复合材料液体成型 树脂基复合材料 层间断裂韧性

上海市科技创新行动计划高新技术领域项目中央高校基本科研业务费专项河南省科技攻关计划

205111071002232020G-12212102210036

2024

10.13801/j.cnki.fhclxb.20230529.006

复合材料学报
北京航空航天大学 中国复合材料学会

复合材料学报

CSTPCD北大核心
影响因子：0.933
ISSN：1000-3851
年,卷(期)：2024.41(1)
  • 10